Angular 嵌入问题

Question

如何在重复 transclude 期间通过 i 而不是通过 # 调用数组？使用下面的代码，重复使用数组中适当数量的项目构建我的列表，但是返回的 x 行数仅为 object[0] 中指定的数据标记。我无法像在重复中那样引用 i。

我是不是想错了，还是只是漏掉了什么？

我有一个这样的手风琴模板

#### accordion.html ####
<ion-content scroll="false">
<ion-list>
    <ion-item class="item-stable alertHeader" ng-click="vm.toggleGroup()" ng-class="{active: vm.isGroupActive()}">
        <div class="row">
            <div class="alertHeaderIcon col-xs-1">
                <i class="icon" ng-class="{'icon-watchList':vm.tag == 'Tag1', 'icon-topPerformers':vm.tag == 'Tag2'}"></i>
            </div>
            <div class="alertHeaderLabel col-xs-9">
                <span class="labelName">{{vm.tag}}</span>
            </div>
            <div class="alertHeaderWarning col-xs-1 pull-right">
                <span class="label label-pill label-default">7</span>
            </div>
            <div class="alertHeaderCaret col-xs-1 pull-right">
                <i class="icon" ng-class="vm.isGroupActive() ? 'ion-ios-arrow-down' : 'ion-ios-arrow-forward'"></i>
            </div>
        </div>
    </ion-item>
    <ion-item class="item-accordion" ng-repeat="i in vm.data" ng-show="vm.isGroupActive()">
        <div ng-transclude></div>
    </ion-item>
</ion-list>
</ion-content>

然后我将其放入我的标记中，如下所示：

#### alerts.html #### 
<ca-accordion class="accordianTest" tag="'Tag1'" data="vm.itemsA">
            <div class="row">
                <div class="home-alert-icon col col-10">
                    <i class="icon" ng-class="{'icon-watchList':vm.itemsA[0].wlName == 'labelA', 'icon-topPerformers':vm.itemsA[0].wlName == 'labelB'}"></i>
                </div>
                <div class="home-alert-title col col-70">
                    {{vm.itemsA[0].wlName}}
                </div>
                <div class="home-alert-retailers">
                    {{vm.itemsA[0].wlRetailers}}
                </div>
                <div class="home-alert-metric col col-20">
                    {{vm.itemsA[0].wlPercent}}
                </div>
        </div>
</ca-accordion>

Answer 1

您缺少的是被嵌入的内容存在于调用指令的同级范围内，而不是在您的 ng-repeat 范围内。所以你就是 i 在这里无法访问的原因：

<ca-accordion class="accordianTest" tag="'Tag1'" data="vm.itemsA">
            <div class="row">
                <div class="home-alert-icon col col-10">
                    <i class="icon" ng-class="{'icon-watchList':vm.itemsA[0].wlName == 'labelA', 'icon-topPerformers':vm.itemsA[0].wlName == 'labelB'}"></i>
                </div>
                <div class="home-alert-title col col-70">
                    {{vm.itemsA[0].wlName}}
                </div>
                <div class="home-alert-retailers">
                    {{vm.itemsA[0].wlRetailers}}
                </div>
                <div class="home-alert-metric col col-20">
                    {{vm.itemsA[0].wlPercent}}
                </div>
        </div>
</ca-accordion>

并且只有 vm.itemsA 可以访问。

因此，一个可能的解决方案是将整个 ng-repeat 移到外部，移到嵌入的内容中，

或者编写你自己的指令，它将包含范围，这意味着被包含的内容将存在于你的 ng-repeat 的范围内。

    /**
    @desc a copy of the ng-transclude implementation, but makes the transcluded content scope
    to be in the same scope of where the transcludeWithScope was used (ngTransclude behaivor
     bound it to the parent scope)
    */
function transcludeWithScopeDirective() {
    return {
        restrict: 'EAC',
        bindToController: true,
        link($scope, $element, $attrs, controller, $transclude) {
            function ngTranscludeCloneAttachFn(clone) {
                if (clone.length) {
                    $element.empty();
                    $element.append(clone);
                }
            }

            // If there is no slot name defined or the slot name is not optional
            // then transclude the slot
            var slotName = $attrs.transcludeWithScope || $attrs.ngTranscludeSlot;
            $transclude($scope, ngTranscludeCloneAttachFn, null, slotName);
        },


    };
}

angular
    .module('transcludeWithScope', [])
    .directive('transcludeWithScope', transcludeWithScopeDirective);

然后更新您的 accordion.html 以使用 transcludeWithScope 而不是 ng-transclude:

 <ion-item class="item-accordion" ng-repeat="i in vm.data" ng-show="vm.isGroupActive()">
    <div transclude-with-scope></div>
</ion-item>

和您的用法：现在我们可以访问 i，因为我们嵌入的内容位于我们的 ng-repeat 范围内。

<ca-accordion class="accordianTest" tag="'Tag1'" data="vm.itemsA">
            <div class="row">
                <div class="home-alert-icon col col-10">
                    <i class="icon" ng-class="{'icon-watchList': i.wlName == 'labelA', 'icon-topPerformers': i.wlName == 'labelB'}"></i>
                </div>
                <div class="home-alert-title col col-70">
                    {{i.wlName}}
                </div>
                <div class="home-alert-retailers">
                    {{i.wlRetailers}}
                </div>
                <div class="home-alert-metric col col-20">
                    {{i.wlPercent}}
                </div>
        </div>
</ca-accordion>

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